Year Percent of GDP 1980 15.528 1981 12.581 1982 11.599 1983 9.148 1984 7.968 1985 7.083 1986 11.069 1987 18.037 1988 17.527 1989 29.353 1990 31.98 1991 31.966 1992 33.534 1993 31.066 1994 12.82 1995 11.502 1996 13.782 1997 11.622 1998 9.747 1999 8.189 2000 10.716 2001 15.489 2002 16.697 2003 17.391 2004 18.533 2005 19.892 2006 21.521 2007 22.361 2008 22.285 2009 18.25 2010 21.248 2011 21.647 2012 22.143 2013 23.283 2014 24.395 2015 25.378 2016 30.01 2017 30.343 2018 30.815 2019 30.944 2020 30.162 2021 29.547 2022 29.139 2023 28.765 2024 28.433